http://www.beet.tv/2008/12/-iphone-could-rival-nintendo-ds-as-mobile-gaming-platform.html

As video game publishers introduce more games for the iPhone, the device will become an increasingly used video game platform, says Libe Goad, editor-in-chief of AOL's PlaySavvy.com, a popular guide/information portal about video games. While rudimentary games for the iPhone are popular, such as TapTap, more sophisticated games are coming to the iPhone soon, including the "Need for Speed" franchise.
Might Apple's iPhone challenge Nintendo DS as a mobile game platorm? Libe says in this interview with Beet.TV that it could happen.
She also says that gaming on Facebook is a big trend, notably with Playfish games.
-- Andy Plesser, Executive Producer